amc3842b ADDtek Corp, amc3842b Datasheet - Page 8

• Manufacturer Part Number: amc3842b
• Description: Current Mode Controller
• Manufacturer: ADDtek Corp

Copyright © 2006 ADDtek Corp.
Shutdown
Fig. 5. Shutdown Techniques - there are two ways to shutdown the PWM controller: 1) raise the voltage at
I
Fig 6. Slop Compensation – To achieve duty cycles over 50% for some applications, the above
SENSE
330Ω
above 1V or, 2) pull the COMP below a voltage two diodes above ground.
slope compensation technique is suggested by resistively summing a fraction of the oscillator
ramp with the current sense signal.
1K
500Ω
To Current
Sense Resistor
APPLICATION INFORMATION (continued)
R
I
SENSE
V
T
V
I
SENSE
/C
REF
REF
T
0.1µF
R
C
T
T
8
Shutdown
R
C
2
R
1
AMC3842B/43B/44B/45B
R
I
SENSE
SENSE
DD019_F -- OCTOBER 2006
COMP